I found a few more recent Tolkien papers / chapters which seemed of interest to me, two in open access:

* “Tolkien: sobre la trascendencia desde el corazon artistico”. Part of a 2021 Spanish-language volume of essays whose title translates as The Absent Presence: God in Contemporary Literature, from the University of Castilla-La Mancha. (Gives the initial appearance of being about the discovery of earendel, but this is quickly skipped over and the text is actually a survey-study of the creation elements in The Silmarillion).

* “Finnic tetrameter in J.R.R. Tolkien’s The Story of Kullervo in comparison to W.F. Kirby’s English translation of the Kalevala“. (A close line-by-line study, comparing the “chunks of poetry” in Tolkien’s Story with Kirby’s 1907 translation).

* Tolkien and Auden, a study in Russian with an English abstract available… “… examines the main stages of the relationship: Auden’s studies at Oxford University, where Tolkien was one of the lecturers and examiners of the poet, and the friendship that arose several decades later on the basis of a common interest of the former student and the professor in Old English poetry, as well as Auden’s deep interest in the epic novel The Lord of the Rings and Tolkien’s works in general. Particular attention is paid to the analysis of Tolkien’s letters to Auden, which are characterised by a confidential, friendly tone. It is noted that these letters are an important source of information about the reasons, history and ways of writing of Tolkien’s works. The situations behind specific letters are revealed through engagement with additional sources.”